C+K Skin-pH-Meter PH 905

The Skin-pH-Meter PH 905 is an economical probe for fast and easy pH value determination, specifically for skin and scalp.

Technical data


Measuring principle

Measurement is carried out using a high-quality combination glass electrode that combines the H+ ion-sensitive electrode and the reference electrode in a single glass rod. This is connected to a probe handle that houses the measuring electronics.

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Advantages of the Skin-pH-Meter

The probe’s modern, high-quality electronics allow extremely fast and reliable measurement (1 second) without creating occlusion at the skin site.
The flat probe head allows the probe to sit perfectly on the skin.
Single and continuous measurement possible.
pH value is displayed with one decimal place.
The probe can be easily recalibrated by the user.
Device established worldwide, supported by a large number of studies.

Fields of application:

Changes in the skin’s pH value play an important role in many areas. Washing hair

In pharmaceutical and cosmetic development and in the formulation of household products (skin care, hair care, cleaners and detergents, pharmaceuticals, etc.)
In basic dermatological research.
pH measurement plays a role in occupational medicine to illustrate the need for the use of skin protection products.
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The Skin-pH-Meter 905 is available as a standalone device, as part of the combined device Derma Unit SSC 3, for connection to MPA systems, or as a wireless probe.

Technical data

Probe only:

Dimensions: 22.8 cm, cable length: approx. 1.3 m, measuring surface: Ø 1 cm, flat contact, weight: 130 g

Measuring range: pH 0 to pH 11, accuracy: ± pH 0.1

Dimensions of the wireless radio probe: see technical data base systems

Subject to technical changes.